by High Performance HVAC | Refrigeration |
Refrigerant Alarm Control for Chiller Room
This refrigerant alarm serves two chiller rooms and alerts operators and other staff that refrigerant has been released into the mechanical room. Chillers have a built-in pressure relief valve that will release the refrigerant in the event too much pressure builds up in the system. This prevents a possible explosion from too much pressure and also protects the equipment from a catastrophic failure that would make the chiller unusable. (more…)
by High Performance HVAC | Boilers |
Hot Water Boiler Expansion Tanks - There are two types of expansion tanks used on hot water boiler systems. The steel expansion tank and the bladder-type expansion tank. These expansion tanks are used to provide a cushion for the expansion of water when it is heated.
Without this cushion of air, the pressure in the boiler system would exceed the setting on the pressure relief valve. Finally, this will cause the pressure relief valve to open and discharge water to relieve the pressure. (more…)
by High Performance HVAC | Boilers |
Boiler Components Controls - All hot water boilers must have an expansion tank. Water expands when it is heated. There must be a place for it to expand so that the pressure in the boiler loop remains constant. Without a hot water boiler expansion tank, the pressures in the boiler loop system would vary wildly.
Most likely, the pressure will exceed the maximum pressures designed for the boiler hot water loop system. This will result in setting off the pressure relief valve. (more…)
by High Performance HVAC | Boilers |
The boiler pressure relief valve (PRV) is a safety valve designed to relieve an excessive build-up of pressure inside the boiler. The is a pressure vessel designed to handle a safe amount of pressure. If the pressure were to build up beyond the safety limitations as set forth by the design specifications the boiler system needs a safe way to vent the pressure to prevent an explosion. Furthermore, the boiler PRV is a safe way to vent excessive dangerous pressures inside the boiler. (more…)
by High Performance HVAC | Boilers |
HVAC Near Boiler Piping Components - HVAC near boiler piping is very important to a good hot boiler loop circulation of the water. Hot water loop piping is key to maintaining good water flow throughout the system. The placement of valves, the circulator pump, and other loop controls are generally installed near the boiler. (more…)
